What does this mean ?

My period is in 3-2 days. I was feeling myself earlier. I was wet and horny. I fingered myself. Gently and kinda deep but not too deep. I climaxed. I noticed that my fingernail has like some kind of tiny blood mixed with my discharge. I know it’s normal but what could it be that caused it?

I feel like it’s somewhat related to my period since it’s due within 2-3 days! Could it be “spotting” like now it’s red but when it comes out on the day of my period, it “brown” Cos it’s old-old blood? Does that make sense? Like, usually first day of my period, it starts off with some brown spotting. Anything will help :)